Inverted mantle holder



ZQZSAG? Dec. 10, 1935. c. w. DAVIS INVERTED MANTLE HOLDER Filed Jun'e16, 1932 iNVENTOR, CORTLAND W. DAV

Patented Dec. 10, 1935 PATENT OFFICE INVERTED MANTLE HOLDER Cortland W.Davis, Alexandria, Ind., assignor to The Mantle Lamp Company of America,Chicago, 111., a corporation of Illinois Application June 16, 1932,Serial No. 617,554

25 Claims. (01. 67--50) The invention relates to holders forthoriumimpregnated mantles of the soft or rag type which, hitherto, havebeen tied by unskilled users to the blue-flame burners on which they areto be employed, and there incinerated in the usual manner.

These rag mantles often give unsatisfactory service on the burner whentied to the outside of the burner by asbestos cord which, due to theinexperience of the user, produces objectionable wrinkles in the mantlethat remain after it is incinerated on the burner. Furthermore,incinerated mantles produced from rag mantles tied by the user to theexterior of a burner often become loosened from the burner after themantle has become incinerated, due to the fact that the user did notproperly secure the rag mantle to the burner.

' These objectionable features of these prior-art rag mantles areeliminated by the present invention, which embodies a mantle support towhich a rag mantle may, without distortion, be properly secured in thefactory by a skilled workman. The new mantle support makes it possiblefor an unskilled user to quickly and easily position these mantles at apredetermined and most favorable location of the mantle relative to theburner. The new mantle support further comprehends the inclusion of awire-gauze or similar diaphragm that prevents the flashing back of theflame of the burner and makes it possible to renew this diaphragm witheach new mantle support.

This invention also comprehends means for supporting the mantle holderfrom the inside of a burner head where it is subjected to the coolinginfluence of the inflowing combustible mixture, and thereby preventedfrom oxidizing and adhering to said burner.

The invention will best be understood if reference be had to theaccompanying drawing showing its preferred embodiment, and in which-Figure 1 shows in elevation a lantern equipped with the improved mantleholder;

Figure 2 is a vertical sectional view of a burner head in which saidmantle holder is to be secured; and

Figure 3 is a vertical sectional view of said mantle holder, the mantlebeing removed therefrom.

Referring to the drawing, Figure 1 shows a lantern having a reservoir Ifor liquid fuel which, under the pressure of a super atmosphere disposedabove the level of said liquid fuel, flows through a vaporizer 2 to ajet orifice 3 from which 7 point.

it passes with entrained atmospheric air to a mixer 4 and thence to aburner head 5.

A preheating burner 6 of suitable type, receiving liquid fuel from anyconvenient source through a pipe I, is employed to initially vaporizethe liq- 5 uid fuel in the vaporizer 2.

The tubular burner head 5, which is screwed on or otherwise secured tothe extreme end of the mixer 4, is interiorly provided with a groove 8and with a tapered interior wall 9 extending upward 10 to said groove 8.

The mantle holder II) has a cylindrical body I I which fits said taperedinterior wall 9, and from the upper margin of said cylindrical body llrise resilient prongs l2 having outwardly and in- 15 wardly-curved,upper ends lZa which interlock with said groove 8 when said mantleholder i0 is connected with said burner head 5, the resiliency of saidprongs I2 being such as to permit them to retract while rising past thetapered interior wall 20 9 of said burner head 5 and to cause theirupper ends to interlock with said groove 8, to thereby hold said mantleholder I 0 in position within said burner head 5. i

It will be observed that the cylindrical body I l 25 of the mantleholder [0 fits the cylindrical lower portion of the inner wall of theburner head, thus producing a tight joint which prevents the escape ofthe combustible mixture. The lower end of said mantle holder I0 is pro-30 vided with a seat l3 for the reception of the upper end of a ragmantle, and with a wire-gauze diaphragm l4 that prevents the flashingback of the flame within the mantle, which in Figure 1 is designated bythe numeral l5. Said lower end is 35 of less diameter than the body ofthe holder, so that the mantle which is to be attached thereto will lieclose to the burner flame.

By fitting the mantle holder within the burner head 5, where acomparatively low temperature 40 is maintained by the shieldinginfluence of said Having thus described my invention, what I claim is:

1. A holder for an inverted incandescent mantle, having a tubular lowerend for the reception of the upper end of a mantle, and aninwardly-yielding and outwardly-expanding upper end having exteriormeans for engaging with a depression within a burner head.

2. A holder for an inverted incandescent mantle, having a tubular lowerend for the reception of the upper end of a mantle, and aninwardly-yieldingly and outwardly-expanding upper end having prongswhich are shaped to engage with an endless groove within a burner head.

3. A holder for an inverted incandescent mantle, having a tubular lowerend for the reception of the upper end of a mantle, a wiregauzediaphragm, and a resilient upper end pro- .vided with means for lockingsaid upper end to the inside wall of a burner head.

4. A holder for an inverted incandescent mantle, having a tubular lowerend for the reception of the upper end of a mantle, a, wiregauzediaphragm, and an upper end provided with resilient prongs for lockingsaid upper end to the inside wall of a burner head.

5. A holder for an inverted incandescent mantle, having a tubular lowerend for the reception of the upper end of a mantle, and resilientupstanding prongs provided with outwardly-inclined upper ends forlocking said holder within a depression of a wall of the burner head.

6. A holder for an inverted incandescent mantle, having, at its lowerend, a wire-gauze diaphragm and means for the reception of the upperendof a mantle, and an inwardly-yielding and outwardly-expanding upperend having exterio'r means for engaging with a depression within aburner head.

7. A holder for an inverted incandescent mantle, having, means exteriorof its upper end for attaching it within a burner head, and a contractedlower end provided with a seat for the upper end of a mantle.

8. A holder for an inverted incandescent mantle, having a cylindricalbody portion, a cylindrical mantle-holding portion smaller than andextending downward from said body portion, a wire-gauze diaphragm and amantle carried by said mantle-holding portion, and resilient prongsextending upward from said body portion.

9. A tubular burner head for a hydrocarbon lighting device, said burnerhead having the inner surface of its lower end upwardly tapered andprovided with a horizontal groove, said tapered section terminatingadjacent said groove.

10. A tubular burner head having an interior groove, combined with aninverted mantle holder that is provided with a resilient upper endextending into and interlocking with said groove.

11.v A hydrocarbon lighting device, includinga.

tubular burner head for directing a mixture of air and vapor to amantle, said burner head having an endless groove in its inner wall forengaging locking meansv of a replaceable holder for an invertedincandescent mantle.

12. A lighting device including a tubular inverted burner head having aninternal annular recess, an incandescent mantle, and a mantle holdermade from sheet metal and having its lower end adapted for theattachment of said mantle, a castellated inwardly-yielding andoutwardly-expanding upper end engaged in the annular recess within thesaid burner head, and a central portion adapted to prevent the escape ofvapor between said burner head and the attached end of said mantle, saidholder during operation being protected by the stream of unburned vaporwhereby rapid oxidation of said holder is prevented.

13. A sheet-metal support for an inverted incandescent mantle, saidsupport having at its lower end a tubular seat for the attachment of themantle, and having a central body section adapted to snugly fit within aburner tube and upstanding resilient members adapted to be inwardlycompressed when inserted into a conical burner tube and to outwardlyexpand and engage a depression within said burner tube.

14. A holder to support an inverted incandescent mantle from a burnertube, said holder having a tubular lower end adapted for the attachmentof said mantle, a central portion adapted to snugly fit within saidburner tube to prevent leakage of vapor outside of said holder, and acastellated inwardly-yielding and outwardly-expanding upper end adaptedto resiliently engage a depression within the end of said burner tube.

15. An inverted rag mantle provided at its open end with and attached toa sheet-metal support, said support having an inwardly-extending grooveat its lower end for the reception of the upper end of the mantle, acylindrical body portion adapted to prevent leakage of vapor outside ofthe mantle when in use, and a system of up-- standing prongs adapted toengage with holding means within a burner tube.

16. A holder for supporting an inverted incandescent mantle from atubular burner head, having, in combination, a castellated resilientupper portion shaped for insertion within the orifice of said burnerhead, means for the attachment of said mantle, and a wire gauzediaphragm to prevent the flame at said mantle from flashing back intosaid burner head.

17. In combination, an incandescent mantle for use in an invertedposition, and a holder for supporting said mantle from a tubular burnerhead, said holder having a castellated resilient upper portion shapedfor insertion within the orifice of said burner head, a contracted lowerportion shaped to receive and secure said mantle,

a wire gauze diaphragm in said lower portion, and r a continuous annularcenter portion integral with said upper and lower portions.

18. In combination, an incandescent mantle for use in an invertedposition and a holderfor supporting said mantle from a tubular burnerhead,

said holder having a castellated resilient upper portion shaped forinsertion within the orifice of said burner head, means for theattachment of said mantle, and a wire gauze diaphragm to prevent thefiame at said mantle from flashing back into said burner head.

19. A holder for supporting an inverted incandescent mantle from atubular burner head, having,- in combination, a castellated resilientupper portion shaped for insertion within the orifice of said burnerhead, a contracted lower porton shaped to receive and secure saidmantle, a wire gauze diaphragm in said lower portion, and. acontinuousannular center portion integral with said upper and lower portions.

20. A sheet metal holder for supporting an inverted incandescent mantlefrom the inner surface of a tubular burner head, said holder having, incombination, resilient means whereby said holder may be readily attachedto or removed from said burner head, means for the attachment of saidmantle, means to prevent the flame at said mantle from flashing backinto said burner head, and means to prevent leakage of vapor betweensaid mantle and said burner head.

21. In combination, an incandescent mantle for use in an invertedposition, and a holder for supporting said mantle from the inner surfaceof a burner head, said holder having resilient means whereby it may bereadily attached to or removed from said burner head, means for theattachment of said mantle, means to prevent the flame at said mantlefrom flashing back into said burner head, and means to prevent leakageof vapor between said mantle and said burner head.

22. A holder for supporting an inverted incandescent mantle from aburner head, having, in combination, spring-actuated lockingmeans-exterior of its upper portion for attaching it Within a burnerhead, and tubular means at its lower end for the attachment of saidmantle.

23. In combination, an incandescent mantle for use in an invertedposition, and a sheet metal holder for supporting said mantle from aburner head, said holder having resilient and expansive means at itsupper portion for attaching it within a burner head and means for theattachment of said mantle, said holder having at its lower end adiaphragm to prevent back firing.

24. An article of manufacture comprising a mantle holder having at oneend resilient and expansive means for detachably uniting it with atubular burner head, and carrying at the other and tubular end anunincinerated rag mantle.

25. A article of manufacture comprising a mantle holder having at oneend external resilient and interlocking means for detachably uniting itwith the inside of a tubular burner head, and carrying at the other andtubular end an unincinerated rag mantle.

CORTLAND W. DAVIS.

